Originally Posted by
opposite lock
Sounds obvious but have you checked the fuse for that circuit. Sounds like a rewire of the fans is in order as the looms are prone to fail on fan circuits on a Cosworth.
Yes fuse fine. Sounds like I need to rewire as said.
On the radiator fan switch, does it matter which terminal is wired to earth / -ve and which goes to relay energising coil?
Cheers.